“Is PTSD treatment effective?”

Good Day,

Yes, PTSD treatment is effective. Nothing happens instantaneously, nothing is easy, and there is not a "one size fits all" model. ... In order to recover, you have to uncover.
Thanks.

There are several very effective treatments for PTSD. Rapid Resolution Therapy, EMDR, and hypnotherapy focus on interrupting the acute emotional bursts, the unconscious preoccupation with general or specific threats, and mind/brain mistaking non-dangerous situations, perceptions, and events for real threats. CBT and cognitive therapy can be very effective when what needs to be adjusted are dysfunctional views, attitudes, generalizations, beliefs, and habits that tend to perpetuate the dysfunction caused by the mind's processing of the traumatic situations or events. As with any such endeavor, effectiveness is dependent on the skill of the therapist and the quality of the connection they establish with the client.
I hope this is helpful.

Depends on multiple factors. Typically, treatment also involves medication to help stabilize the mood and reduce anxiety. Look into Somatic therapy as a possible treatment as well as EMDR.

Take a peak at this perspective concerning your question:
https://adaa.org/understanding-anxiety/posttraumatic-stress-disorder-ptsd/treatment